(Item NO. DYP-811)
Using HDPE (High Density Polyethylene) waterproofing membrane sheet as the bottom layer, adding non-asphaltic adhesive layer in the middle, covering sand or mineral grain as the surface layer, the HDPE processes the advantage of high tensile strength, impact resistance, puncture resistance, which make it specially adaptable to the
underground and tunnel project waterproofing.
Description: This product has a sand finish to protect the self-adhesive layer, which makes it ready for workers to work on top and provides perfect bonding with post-poured concrete.
1) High tensile strength, impact resistance, puncture resistance, durability up to 100 years theoretically;
2)Skin tight bonding resists "water breakthrough" even if partial perforation or breakage occurs.
3)Anti-subsidence and anti-cracking due to the pre-paving & inverted bonding installation method;
4)Easy& Safe construction, low requirements for the substrate or weather condition, no hot gas welding required;
5)Environmental-friendly: the construction requires no solvent, no fuel of any kind;.
6)Anti-Bacterium resistant & anti-mould:
Non-asphaltic reactive adhesive
Where to use
1.Building basement , air-defense construction, tunnel projects or other underground engineering;
2.Railway, subway, highway or other transportation system waterproofing;
3.Refuse landfill, sewage treatment works & chemical pool or other environmental protective engineering;
4.Reservoir, dam, water channel & artificial lake. Etc;
Executive standard: GB/T23457-2009 Pre-paving/Wet-paving Waterproof Membrane
Tensile strength/(N/50mm) ≥
Elongation at break/% ≥
Nail/tearing resistance/N ≥
Impact resistance performance
Dia(10±0.1)mm, no leakage
20kg, no leakage
70℃, 2h, No displacement, flow or dripping
-23℃, no cracking
Anti-watermoving between layers
0.6Mpa, no watermoving
Peeling strength from post-poured concrete/(N/mm) ≥
Cement powder contaminated surface
Sediment contaminated surface
Ultraviolet radiation aging
After immersed in water
Lap joint shear strength/(N/mm) ≥
Thermal ageing (70℃, 168h)
Tension retain/% ≥
Elongation retain/% ≥
-23℃, no cracking
No wrinkles, sliding or flowing
Dimensional change/% ≤
For tunnel project
Tunnel arch crown – snap lines – install upholder(hanging nails) – pave membrane – mechanically fix HDPE membrane(tie hanging tapes) – overlapping DCPS membrane – joint sealing - reinforcement assembling – concrete lining.
For underground project
Level surface: substrate cleaning – snap lines – pave HDPE membrane – overlapping HDPE membrane – joint sealing – reinforcement assembling – concrete lining.
Vertical surface: substrate cleaning – snap lines – pave HDPE membrane – mechanically fix HDPE membrane – overlapping HDPE membrane - reinforcement assembling - concrete lining.
Product is packed in rolls and wrapped by plastic membrane.
Product should be stored in a dry, ventilated and cool place with temperature lower than 45℃.
Do not exposed to insolation and rain.
flat-wise storage, with stacking height not over 5 layers. Any incline or crossover should be prevented.
Under normal storage condition, product shelf life is one year.